Make files organisation clearer

[slaweet]

Expected behaviour

Some files should be moved and/or renamed, namely:

# adhere to cammelCase
mv src/app/lisk-nano.js src/app/liskNano.js
mv src/app/services/sign-verify.js src/app/services/signVerify.js
mv src/app/components/sign-verify/sign-message.js src/app/components/sign-verify/signMessage.js 
mv src/app/components/sign-verify/sign-message.pug src/app/components/sign-verify/signMessage.pug 
mv src/app/components/sign-verify/verify-message.js src/app/components/verify-verify/verifyMessage.js 
mv src/app/components/sign-verify/verify-message.pug src/app/components/verify-verify/verifyMessage.pug
mv src/app/components/sign-verify/ src/app/components/signVerify/

# this one need to be merged with ./package.json
mv src/package.json ./

# make folder structure cleaner
mv src/app/services/peers/peers.js src/app/services/
rmdir src/app/services/peers/
mv src/app/* src/
rmdir src/app
mv src/test ./test
mv src/spec ./e2e-test

# move conf files to root
mv src/webpack.config.babel.js ./
mv src/karma.conf.js ./
mv src/.eslintrc.json ./

Consequently, all the files that refer to the aforementioned have to be updated.
Also, unit test files cammelCase should be updated accordingly.

Actual behaviour

All files are in their current location